Hi again :)
It may then make sense if he wasn't registered in that year ..... I've spoken to my Dad who has given me all the information he knows and his understanding is Robert's (half) older brother (who we think is called George) also had the surname Wells.
It's great to know how she would have had to register the birth though - can I ask do you know what the protocol would have been if she gave him up to the care system without registering his birth herself (so no adoptive parents he would have been a ward of a Banardo's care home)?
Thanks again